This weapon deals 20% less damage than the default Revolver, making it less suitable for direct combat. However, a successful hit will fill the Spy's cloak meter by 15%, regardless of which cloaking device is equipped. Equipping this weapon also extends the maximum duration of the Spy's cloak by 40%. Players can therefore use the gun to charge their cloak, and then use the added cloak duration to perform an escape or traverse a guarded area. This is especially useful when there are no ammo supplies nearby, or if the selected cloaking device makes using ammo supplies difficult.

The bonus cloak duration works to a lesser degree with the Dead Ringer due to it's innate cloak duration bonus. If the Your Eternal Reward is equipped, it's drain penalty is nullified and the cloak duration bonus of the L'Etranger is halved.

Trivia

The main character of the book is widely considered a sociopath due to his cold nature, similar to the Spy's cold and murderous actions.

L'Etranger is French for "The Stranger", "The Outsider", "The Foreigner" or "Abroad", tying in with the Spy's mysterious nature and his origins in France.

The weapon is modeled after the Nagant M1895 revolver. However the L'Etranger, like the Revolver and Ambassador, reloads with a speedloader and flip-out cylinder, whereas the actual Nagant uses an Abadie gate and hand ejector to load one cartridge at a time. Also, the Nagant has a 7-round cylinder, as opposed to the L'Etranger's cylinder holding 6, like the Spy's other revolvers. In addition, the Nagant M1895 features an unusual feature known as a Gas-Seal feature, which is used to close the gap between cylinder and barrel, increasing the muzzle-velocity and giving the Revolver the capability to be silenced. However the L'Etranger isn't silenced and can be heard normally like any other gun.